A root cellar is an underground chamber used to store fruits, vegetables, and even meats. In extreme cold, farmers put large vats of water into the root cellar to prevent the fruits and vegetables from freezing.

Water has high heat capacity to act as a thermal buffer against freezing.

The specific heat capacity of water = 4.2 joules per gram per degree Celsius or 1 calorie per gram per degree Celsius.

So, the vats of water will help in preventing the freezing of the materilas inside.

Explanation:

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).